/*
 * Copyright 2008-2009 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.hasor.neta.bytebuf;
/**
 * A contiguous block of memory
 * @author 赵永春 (zyc@hasor.net)
 * @version : 2024-02-15
 */
class PageChunk implements PageRange {
    private final int           fromPage;
    private final int           toPage;
    private final PageChunkPool ownerPool;
    PageChunk parent;
    PageChunk prev;
    PageChunk next;

    public PageChunk(PageChunkPool ownerPool, int fromPage, int toPage, PageChunk prev, PageChunk parent) {
        this.ownerPool = ownerPool;
        this.fromPage = fromPage;
        this.toPage = toPage;

        this.parent = parent;
        if (prev != null) {
            this.prev = prev;
            this.prev.next = this;
        } else {
            this.prev = null;
        }
    }

    @Override
    public int getMemAddress() {
        return this.ownerPool.getMemAddress();
    }

    @Override
    public int getFromPage() {
        return this.fromPage;
    }

    @Override
    public int getToPage() {
        return this.toPage;
    }
}